Stubble burner



Feb-

S. J. GOQDFELLOW STUBBLE BURNER Filed May 8, 1925 Patented Feb. 22, 1927.]

P N mi G Q 'LEOW 9r. Re n a as-HEW RI; cannibal, Assieiiroa' To WESTERN IMPLEMENTS L'nvnrnn, or itEGIIIA, s esaareiiswan, CANADA, A con- FQRA'IION OF SASKATCHEWAN.

SIUBBLE BURNER Application filed May 8, 1925, Serial No. 28,964, and in Canada November 21, 1924.

This invention has relation to certain new and useful improvements in; stubble burning and weed and" insect destroying inaehines and has for its primary object the provision of a machine of this character includinga llltllflw frame.- which' supports a number of individual burner sections capable of being elevated and lowered by the operator of the machine with. facility, said burner sections being resiliently constructed to reduce the possibility of breaking or def:- ormation when travelling over irregularities in the surface .ofthe ground.

A further object of the inventionis to provide each individual burner section of the machine witha large vaporizer extending transversely thereof to which a plurality of burner .jets'are connected. thus providing a construction by which the fuel in the vaporizer isfree to flow longitudinally thereof and through the several burner jets without interruption.

Another object of the invention is to provide a burner of this character wherein the fuel-oilgwill be preh ted an partially vaporized while passing through the fuel supply pipe and completely vaporized while passingthrough the vaporizer before enteringthe burner jets.

lVith the foregoing and other objects in view as will appear a'sthe description proceeds, the iri'tention consists of the novel construction, combination and arrangement of co-operating elements as hereinafter more specifically set forth claimed and shown in the accompanying drawings, forming a part of the present application. and in which:

Figure 1 is a sectional elevation of a suitable vehicle to which my burner is applied.

Fig. 2 is an enlarged detail transverse section through one of the burner tubes} taken on the line 2-2 of Fig. 4 looking in the direction indicated by the arrows.

Fig. 3 is an'enlarged detailvseetion taken on the line 33 of Fig. 1 looking in the direction indicated by the arrows Fig. 4 is a complete burner section without the baflle plate showing the relative portions of the fuel feed pipe, vaporizer an burner jets.

Like numerals of reference designate corresponding parts throughout the views.

The frame of the machine may include.

longitudinal beams 3 and transverse beams 5 and 6, which latter are connectedby the braces 7.

The forward. end of the machine is sup.- ported by a truck designated in its entirety by the nun feral 8 which is connected by the king pin 9 to the casting l0. Brackets 11 are connected to the braces 7 extendingbetween the transverse beams 5 and 6. Axles 12 are extended through said brackets and support the rear ground wheels 13 -Meunted upon the frame of the vehicle is a fuel oil supply tank 14 inwhich a uniformpressure is maintained by a hand op; erated air pump 15. which latter is connected to the tank by suitable piping not shown in the drawings. The tank is provided with one or more outlets each controlled by a needle valve 17, and the valve stem 19 thereof extends adjacent the operators seat 21 so that it may be readily controlled by the o erator. The burner sections are supportby and conveyed over the ground the vehiele and any number of these sections may be employed as conditions may dictate. but as construction of these sections are the same only one section need be described. v

The vaporizer of the burner consists of a transverselyentending pipe 32 having its opposite ends closed and extending at right angles to this pipe 32 are a plurality of U-shaped burner tubes 38 each having one end communicating with the vaporizer pipe and their free ends terminating in spaced relation adjacent one side thereof. A fuel pipe 30 communicates with the medial portion of'said vaporizer pipe and a portion thereof extends parallel with the spaced burner tubes 30. This fuel pipe 30 is provided with an angular section 28 arranged parallel to the vaporizer pipe and cornmunicates withan inclined section 24. The upper end of the fuel pipe section 24 is connected to the needle valve 17 by means of a flexible pipe 23. The vaporizer pipe, fuel pipe and burner tubes are suspended below a baffle plate 26 by means of the brackets 35 and 36. The V-shaped brackets 35 support the burner tubes whereas the brackets 36 support the vaporizer tube 32 adjacent the rear end of the bafiie plate as is illustrated in Figure 1. Connected to these brackets arethe supporting arms 34 having their inner ends pivotally connected to the t 'ansverse beam 5 of the vehicle frame as at 37.

In order to retain the burner section in proper spaced relation with the ground over which it passes a suitable supporting and elevating mechanism is provided which includes the bell crank levers 89 mounted upon the vehicle each having one arm connected to the baffle plate of the burner by means of chains whereas the opposite arm of each lever is connected by means of a chain 48 to a hand lever elt. A retractile spring 44: has one end connected to the vehicle and ts opposite end connected to the lever 39 by means of a chain 4:5 whereby the burner may be resiliently retained in position.

When placing my improved burner in operation it is first des rable to place a quantityof straw or other similar material on the ground under the. vaporizer 52, sprinkled with a liquid fuel and ignited. The flames arising therefrom serve to heat the burner jets 38, the portion 30 of the fuel oil supply pipe and the vaporizer 32. The required pressure is then exerted upon the fuel oil contained within the fuel oil supply tank 14; by manipulation of the pump 15 and the needle valve 17 is then opened. The fuel oil flowing through the portion 30 of the fuel oil supply pipe becomes heated and vaporized to such an extent that when it is discharged into the *aporizer 32 it is practically instantaneously vaporized. This vaporized fuel will then flow longitudinally of the vaporizer 3:2 and through the burner jets 38 the same egressing from the latter at a high veloc ty. hen the fuel from these burner jets is ignited the flame will impinge upon the surface of the ground, completely destroying stubble and ol'inoxious growth.

The flame from the jets as well as the heat generated therefrom confined beneath the bafile plate 26, thus insuring complete destruction of all obnoxious growth and thorough heating of the fuel oil vaporizing mechanism.

By supplying fuel oil under pressure the flow of which is controlled by one needle valve only for each burner section the same may be fed without interruption to the va' porizer of that burner section. lly ctmnecting a number of burner jets to each vapor izer, the combustible elements are free to flow through each of the vaporizer-s and all of the burner jets without restriction, thus insuring an even and constant flow over the entire area beneath the superposed ballle plate.

By supporting the burner sections in the manner described the same may be elevated as required when passing irregularities in the surface of the ground or for transportation along rough roads.

Without further analysis, the torcgoinng will so fully reveal the gist of this invention that others may. by applying current knowledge, readily adapt it to various applications without omitting certain features that from the standpoint of the prior art fairly constitute essential characteristics of the generic or specific aspects of this invention, and therefore, such moditi *atious tzil'ltlllltl and are intended to be comprehentled within the meaning and range of the equivalency of the following claims.

What I claim as new is:

1. A stubble burner of the character described coinprisii'ig a. vaporizer consisting of a pipe having its opposite ends closed a plurality of U-shaped burner tubes arranged side by side each having one end communicating with said vaporizer pipe, the free end of each tube terminating in spaced relation adjacent said vaporizer pipe,

a fuel pipe connnunicating with the medial portion of said vaporizer pipe and said fuel pipe and tubes extending in parallel spaced relation from one side of said vaporizer pipe.

2. A stubble ljiurner of the character described comprising a battle plate, brackets secured to and depending from the lower face thereof, a vaporizer pipe supported by several of said brackets and extending transversely of said battle plate adjacent one. end

thereofi a plurality oli perforated burner tubes connnunicating with said "aporizer pipe supported by other of said brackets and a fuel pipe arranged below said battle plate, said fuel pipe and tubes being ar ranged in parallel spaced relation at right; angles to said vaporizer pipe. N

in witness whereof l have hereunto atliited my signature.

MAM P HUN J U H N GU01) lllflLLt) W. 

